Process of casting corners for metal beds



I. A. FEATHERMAN.

PROCESS OF CASTING CORNERS FOR METAL BEDS.

APPLICATION min 050.16, 192;.

1 %1 343 PdtentedMayifi 22k users Kiwi a 1a v I R L'A. FEATHERM AN.

PRQCESS 0F. CASTING CORNERS FOR METAL BEDS. APPLICATION men use. 16,1921.

1,416,343, Patented 16,1922.

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PROCESS OF CASTING CORNERS FOR METAL BEDS.

APPLICATION FILED DEC. 16. I921.

1,416,343., v Patented May16,1922.

3 SHEETS-SHEET 3.

IRVXNG A. FEATHERMAN, 0F BROOKLYN, NEW YORK PROCESS OF CASTING CORNERSFOR METAL BEDS.

Application filed December 16, 1921.

To all whom it may concern:

Be it known that I, IRVING A. FEATHER MAN, a citizen of the UnitedStates, residing at Brooklyn, in the county'of Kings and State of NewYork, have invented a certain new and useful Improvement in Process ofCasting Corners for Metal Beds, of which the following is aspecification.

My invention relates to the manufacture of corners for metal beds andhas for its ob- .ject to provide a process whereby the said corners canbe formed accurately and so that the surfaces will be true and squarewith relation to the angles forming the side or foot rails of the bed.These corners are usually formed in castings molded in molders sand. Itis well known that castings formed in this way vary due to the amount ofrap given to the pattern by the molder and in addition to the variationin size which is extremely undesirable, there is the further objectionthat the sides are not true. In devices of this character it is alsocustomary to provide a staple which is adapted to enter an opening inthe corner post of the bed, it being then secured by driving a key orpassing a bolt through the said staple. It is in the present method ofconstruction difiicult to hold these staples true in the castingoperation and also there is continual trouble due to the crystallizationof the ends of the staple if not the complete melting away of themcaused by the molten metal impinging thereon when poured from the ladle.the corners is experienced when it is desired to cast them to form acomplete frame. In such a case the angle iron which forms one of the bedrails is frequently cast integral with the corner and the angle whichextends at right angles thereto is riveted or bolted to the corner whichhas been cast on the end of the first angle iron. It is extremely desirable to produce these frames so that they are square and so that theywill remain so because of the fact that springs are attached to them. Itis well known however, that if one of these frames is dropped andstrikes on one of its corners it will be sprung out of a true rectangleinto a more or less diamond shape. Numerous attempts have been made tounite the two angle irons at the corner by a single casting, operationbut without success. This is due to the impossibility of taking theframe out of the mold until it has entirely cooled off because thecasting opera Specification of Letters Patent.

Another difficulty in the casting of Patented May 16, 1922.

Serial No. 522,795.

tion necessarily expands the metal and al though the frame can be sothat each end is in a different mold all right, it is virtuallyimpossible to take them out without waiting for the molds to cool off.It is, of course, obvious that such a practice would be en-- tirelyimpractical and not commercially possible. The foregoing, of course, istrue only where a chill is employed for a mold, for obviously, it isapparent to persons skilled in the art that it would be impractical. toconstruct such a frame in sand molds.

My invention has for its object to provide a chill which when usedrenders it possible for one to cast the corners of an entire frame,forming the angle iron rails into a homogeneous mass with the metal fromwhich the corners are formed, and which can be readily and speedilyremoved from the chill.

Another object of my invention is to provide a chill in which thecorners can be cast on the bed rail where a staple is required and inwhich this staple will not be inj'uriously affected by the introductionof the molten metal.

For the purpose of illustrating a concrete form for carrying out myimproved process I have illustrated in the accompanying draw- 'ing achill which enables the operator to castview of the chill. Fig. 5 is across-section taken on the lines 5-5 in Fig. 4. Fig. 6 is a frontelevation of the chill. Fig. 7 is an end view of Fig. 6 taken from theend opposite the pivot. Fig. 8 is a top or plan view of a fragmentaryportion showing a corner of the frame after the casting is completed.

Fig. 9 is a side elevation of the same. Fig. 10 is a perspective viewshowing how a com plete frame is made. Fig. 11 is a sectional view online 1111 in Fig. 12. Fig. 12 is an end view of the chill showing theshield for protecting the staple. Figs. 13 and 14 show a modified formof corner.

Similar reference numerals refer to similar parts throughout the entiredescription.

As shown in the drawings the chill comprises a block 10, which is formedwith a base portion 11, and a vertical wall 12, which has pivotallyattached to it a top plate 13, which is mounted upon a belt 141, whichlextends through the wall 12, and is secured in position by means o1 anut 15. The wall 12, is cut away at 16, forming a shoulder upon which acorresponding shoulder 17, formed on the top plate 13, rests. The angleiron forming the rail 18, rests upon the plate 11., its vertical portionresting against the vertical wall formed below the shoulder 16. Thisshoulder, as clearly seen in Fig. 1 projects outwardly from the wall 12.forming a space intermediate the angle and the vertical part of the wall12. The top plate 13, is cut away as at 19, so as to provide a recesswhich will be filled by the molten metal 20, which enters through anopening 21, formed at the junction between the top plate 13, andtheplate 12, in a position just above the point of union of the twoangle irons forming the side and end rails 18 and 22. A matrix 23, isplaced. in the chill on. the base plate 11, this matrix being providedwith a tapered recess 21, to form the tapered lug 60, which is used toconnect the frame of the spring with the corner post of the bed, whichis standard construction. The matrix 23, is held from movement by meansof a pin 25, which is fixedly mounted in the wall 12, and is furtherheld in position by means of a tongue 26. which extends upwardly fromthe top of the matrix block 23, and enters into a corresponding formedin the top plate 13. The matrix. 23, is further secured in position bymeans oil? a block 27, which rests against the side of the matrix block23, its -forward corner 28, extending beyond the matrix block andconstituting; a shoulder which forms a recess in which the metal 29,flows. The face 30, of the block 27, forms a support for the verticalwall of theangle iron22, which vforms the end or side rail, as the casemay he, of the frame, The top plate 13, provided witha downwardlydepending portion 31., which is .provided with a shoulder 32, thevertical portion'of which bears against the face 30, of the block 27,and the horizontal portion rests upon the upper edge 01 the verticalportion of the angle iron 22, holding it firmly in position, which thusensures atrue and accurate casting-,- Obviously the down wardlydepending portion 31, its lower wall cut away forming a shoulder 33,which rests'against the top and edge of the horizontal portion of theangle iron 22, which further assists in holding it firmly in posi tion.A similar shoulder 3 1, is formed to receive-and hold .the horizontalwall and edge of the angle iron 18. The end 35 of the angle iron 22 iscut away to accommodate the end 36 of the angle iron 18 as clearlyinrecess dicated in Fig. 41 so that they can lay in the same horizontalplane. The downwardly depending portion 31, is also cut away oppositethe end face of the matrix 23 so as to form an enclosed chamber intowhich the molten metal is poured, to form the corners. It will beapparent to persons skilled in the art that there must be four of thesechills, one for each corner, which are mounted upon a frame 11, eachchill being spaced the proper distance and bolted or otherwise securedin position to form the corners of a frame of the desired size. If thecorner was cast with the chill as so far described, the expansion 01 themetal would be so great that it would'be impossible to remove the framefrom the our chills until it had cooled Oil. For while the plate 13swings in the arc of a circle so that it moves away from the expandedmetal, still the matrix expands by the heat absorbed from the moltenmetal and it and the corner of the metal which bears against the block23 at the corner 28 and holds the block 23 so tightly it is quiteimpossible to remove the frame from the chills. 1 have overcome thisobjection by providing the bloclr 27, witha mounting which permits it toswing away from the, matrix, and, of course, from the metal forming thecorner at the shoulder 28. 1V accomplish this by providing an outwardlyextending lug 37, whichis fastened:

fixedly to the face 38, ofthe block 27, and extends downwardly to apoint below the lower wall of the block 27, and is hinged by a pin orpivot 39, to a lug40, which ex tends outwardly from the vertical edge11, 01" the base 11, and is fixedly attached thereto in any suitable orconvenient manner. The center of the pin or pivot 39, is and must belocated so that the block 27 will move on an arc of a circle which willtake it away from the wall of the matrix block 23, from the moment thatit moves upwardly. By providing this swinging movement of the block 27,I find that itis possible to remove the frame even while the metalforming the corners is visibly red hot, so that by following my methodof providing a chill, the walls of which are capable of moving away fromthe'metal forming the casting, it becomes possible to cast a frame formetal beds which will be true and accurate at all times and under allconditions.

My means of avoiding the crystallization of the staples when casting thecorners to accommodate bed posts is better seen in Figs. 11 and 12. I p

When casting a corner in this type of chilhl provide a block 70, which'is located above the staple 72, so that'as clearly seen in the drawingthe metal which enters through the opening 71, does not strike upon thestaple but strikes upon the block 70, and then flows around it into thechill and fuses the staple, and the incoming molten metal into ahomogeneous mass, but at a temperature which is not great enough to meltoff the staples or to crystallize them. By using a chill instead 01 asand mold for this purpose it will be apparent to persons skilled in theart that I am able to produce a corner in which. all of the surfaceswill. be true and accurate and the staples can be securely held inproper position. ll hen a corner or" the type shown in Figs. 13 and 14:is to be cast, I find it desirable in practice to punch holes in theangle iron 75 in which the staple 72 is mounted. This assists in holdingit true and also in fusing it with the angle iron and molten metal.

Having described my invention what I regard as new and desire'to secureby Letters Patent is:

1. A. chill for casting corners for metal beds comprising a base plate,a vertical wall thereon, a top plate pivoted to said vertical wall, amatrix on said. base, an angle iron in which'is mounted a staple in saidchill, and means to shield the staple from the molten metal adjacent itspoint of entrance.

2. The method of forming a frame for metal beds, the sides and ends ofwhich are formed of angle irons, which consists in notching adjacentends of said angle irons,

placing said adjacent ends together in a chill mold, one end of which isformed by a matrix, one end and top and one side 01": which are pivotedto swing away from the frame when moved, flowing molten metal into themold to unite the frame parts, opening the mold and removing the frame.

8. The method of forming a frame for metal beds, the sides and end ofwhich are formed of angle irons, which consists in notching adjacentends of said angle irons, placing said adjacent ends together in a chillmold, one end of which is formed by a matrix, one side of which ispivoted to swing away from the frame when moved, flowing molten metalinto the mold to unite the frame parts, opening the mold and removingthe frame.

4:. A chill comprising a base plate, a vertical wall thereon, a topplate pivoted to said vertical wall, a matrix located on said base, adownwardly depending portion on said top plate recessed to form achamber, a swinging block which holds said matrix from lateral movementand means to hold adjacent ends of angle iron bars within said chamber.

In testimony whereof, I have signed the foregoing specification.

IRVING A. FEATHERMAN.

